A pregnant woman is among 17 people to fall ill after eating salmonella-infected chicken purchased from a bakery.

Alicia Cole is one of three South Australians who required treatment in hospital after eating the contaminated meat, South Australia Health has confirmed.

Ms Cole fell ill after eating a chicken and salad sandwich purchased by her partner from Gawler South Bakery.

A number of other cases of salmonella poisoning have emerged in the last fortnight.

There have been 17 cases of salmonella in the past fortnight traced to Gawler South Bakery. (9NEWS) ()

Sandwiches, wraps and focaccias are among food items sold by the bakery – located in a small town on the outskirts of Adelaide – confirmed to have contained the chicken, which is cooked and shredded on site.

All related aspects of food production have since been suspended, as SA Health conducts an investigation into the cause of the contamination.

SA Health said it is committed to enforcing proper sanitation measures at the bakery. The business however is continuing to sell a number of cooked products.